Not to discourage your desire to get into robotics, but this sounds
like a job for a nice little luggage dolly (and a very little bit of
manpower) - cheap, light, manueverable, versitle.. all for probably
less money and effort than you'd spend just getting a 24v battery setup
Think about it. If you could make the robot you envision, you wouldn't
have to fix PCs. If you could afford the robot you envision, you
wouldn't have to fix PCs.
Think about it. Have you ever seen such a robot? That is, not in a
Maybe you could start with one of those remote controlled so called
"robotic" golf caddys ? Just add some way for it to track you (to
follow you around) and you're in business. It's the last part that
is going to be the real work --- getting it to follow you around.
Here's a link to one on eBay:
Just a thought.
I'm confused about what you want based on what others have posted.
Do you just want some type of powered cart for you to walk with? Or are
you asking for a robot that can, on its own, make it's way back to the
house of any client in a large city? The first should be easy to build,
the second, far too expensive for a PC repair business. I assumed you were
looking for the first. Others here seem to have assumed you wanted the
For an electric cart, you could do something like this:
Or something like this used for golf:
Or here are a collection of electric shopping cart pushers and electric
It would be simple to buy a few drive motors and wheels and make a powered
push cart with a remote control. Or you could get an old electric scooter
and modify it.
http://web7days.com/robot/ any suggest on installion of motor on the two
steering is important to me.
M1 ----- M2
W ( not steering wheel)
or method 2 M1 -------- M1
W ( with steering ablility)
which method and why you choose?
None of the pictures are showing up for me on the web site.
That would allow you to steer by controlling the speed of each motor.
That's a fairly common configuration used in robots (assuming the two
wheels are not on a common shaft).
If you put two wheels on a single shaft without a differential the wheels
would have to skid to turn. With rubber wheels and a heavy load, that's
not going to work very well. With a differential, it would work like a
normal car works.
Or you could also drive the third wheel with a motor and leave the main two
unpowered. Configure it so you can turn the powered wheel for steering. A
simple mechanical link like handle from a wagon could be used so that you
don't have to create electronics for steering. Or if you actually need it
remotely controlled you could add another motor to rotate the drive wheel
with the one above one you can also do spins around the middle of the
drive axis, you can turn around any point in a line through the drive
shaft. if you have matching parts, its easy to do and to track your
My first Robot( project starts on 1st August 2006), Courage III Main
purpose to carry Computer from Client to office or vice-verse platform size
28.5 X 59 cm , wheel 18.5 cm in diameter and 8 cm clearance from ground.
So you're asking us for help in your homework project?
However, the rest of the posters are right: the problem, as stated,
would be very difficult and expensive to solve. Somebody pointed
out the possibility of the PC being stolen. I'd worry about the
entire robot being stolen.
D. Jay Newman ! Author of:
firstname.lastname@example.org ! _Linux Robotics: Programming Smarter Robots_
it is a HOME DIY made, not school home work. but it is my first to build
one. I need to build it right and learn from experienced robot builder.
When I completed repair computer and the heavy computer is killing my arms
for the last 2 years.
A. I lived 250 meters from the light railway station, I have to either
to carry the computer to the station or using a buggy which desttached from
a mountain bike. Then the buggy together with the computer is being pushed
into the train component .It pasts the ticket inspector . Tthen continue
my journey to client's home. this journey is strict forward path with two
secondary schools and pedestrains. But I have to shuttle back and forward
B.on the opposite direction ,from station to home, on arrival home there
are a total of about 20 concrete steps. This part is killing me. I really
have to carry the computer to home.
I intend to make wood railway so that it will safely transport the computer
to level ground and able to acroos ONE road , watch out the traffic , then
to continue its journey until it reach the station.
This is a repeat journey , develop cycle is depended on knowledge that I dig
out from the internet. any type of help is great and valuable.
currently I know little about PWM and I have would to install the motor and
make it move manually switch on off.
my purpose is ake it remote control , self intelligent ...etc.
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